Are great tits (Parus major) really optimal foragers?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077395%3A_____%2F03%3A60033052" target="_blank" >RIV/60077395:_____/03:60033052 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/03:00004695

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Are great tits (Parus major) really optimal foragers?

Popis výsledku v původním jazyce

In this study, we test the classical prey model of optimal-foraging theory with great tits (Parus major) feeding on two types of mealworms presented on a conveyor belt. Contrary to the results of some previous experiments, prey types were given to birdsin random order, therefore birds could not predict their next prey item. We tested birds' diet choices at four different prey-encounter rates. Our results show that in 95% of cases great tits consumed the more profitable prey type upon encounter. On theother hand, consumption of the less profitable prey type did not differ statistically from the 'always-attack' strategy in 77% of cases when the rate of encounter with the more profitable prey was below a critical value, and did differ from that strategyin 67% of cases when the rate of encounter with the more profitable prey was above that critical value. Contrary to predictions of the classical prey model of optimal-foraging theory, our birds never completely excluded the less profitab

Název v anglickém jazyce

Are great tits (Parus major) really optimal foragers?

Popis výsledku anglicky

In this study, we test the classical prey model of optimal-foraging theory with great tits (Parus major) feeding on two types of mealworms presented on a conveyor belt. Contrary to the results of some previous experiments, prey types were given to birdsin random order, therefore birds could not predict their next prey item. We tested birds' diet choices at four different prey-encounter rates. Our results show that in 95% of cases great tits consumed the more profitable prey type upon encounter. On theother hand, consumption of the less profitable prey type did not differ statistically from the 'always-attack' strategy in 77% of cases when the rate of encounter with the more profitable prey was below a critical value, and did differ from that strategyin 67% of cases when the rate of encounter with the more profitable prey was above that critical value. Contrary to predictions of the classical prey model of optimal-foraging theory, our birds never completely excluded the less profitab

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

—

Projekt

<a href="/cs/project/IAA6007303" target="_blank" >IAA6007303: Výběr habitatu u predátorů: vliv kompetice</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Canadian Journal of Zoology-Revue Canadienne de Zoologie

ISSN

0008-4301

e-ISSN

—

Svazek periodika

81

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

9

Strana od-do

780-788

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—